<ruby>: The Ruby Annotation element

The <ruby> HTML element represents small annotations that are rendered above, below, or next to base text, usually used for showing the pronunciation of East Asian characters. It can also be used for annotating other kinds of text, but this usage is less common.

The term ruby originated as a unit of measurement used by typesetters, representing the smallest size that text can be printed on newsprint while remaining legible.

Content categories Flow content, phrasing content, palpable content.
Permitted content Phrasing content.
Tag omission None, both the starting and ending tag are mandatory.
Permitted parents Any element that accepts phrasing content.
Implicit ARIA role No corresponding role
Permitted ARIA roles Any
DOM interface HTMLElement

Attributes

This element only includes the global attributes.

Examples

Example 1: Character

<ruby><rp>(</rp><rt>Kan</rt><rp>)</rp><rp>(</rp><rt>ji</rt><rp>)</rp>
</ruby>

Example 2: Word

<ruby>
  明日 <rp>(</rp><rt>Ashita</rt><rp>)</rp>
</ruby>

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
ruby
5
12
38
5
15
5
Yes
Yes
38
14
Yes
Yes

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/ruby